Department of Chemistry and Biochemistry, 631 Sumter Street, University of South Carolina, Columbia, South Carolina 29208, USA.
Anal Chem. 2010 Oct 15;82(20):8427-31. doi: 10.1021/ac101107v.
Infrared thermal imaging using lock-in and molecular factor computing methods for the detection of blood on a dark, acrylic fabric is shown. Contrast differences between the clean fabric and the fabric stained with blood diluted as low as 1:100 are reported. We have also demonstrated that this method can be used to discriminate between a bloodstain and four common interfering agents (bleach, rust, cherry soda, and coffee) to other blood detection methods. These results indicate that this system could be useful for crime scene investigations by focusing nondestructive attention on areas more likely to be suitable for further analysis.
本文展示了使用锁相和分子因子计算方法的红外热成像技术，用于检测深色亚克力织物上的血迹。报告了清洁织物和稀释低至 1:100 的血污织物之间的对比度差异。我们还证明，该方法可用于区分血斑和四种常见干扰剂（漂白剂、铁锈、樱桃苏打水和咖啡）与其他血迹检测方法。这些结果表明，该系统可通过将非破坏性注意力集中在更适合进一步分析的区域上，为犯罪现场调查提供有用的帮助。
